Helen E. Chmura, PhD

Research Ecologist

Rocky Mountain Research Station

0000-0001-6626-8534

helen.chmura@usda.gov

Publications & Products
Related
Education

Treesearch Publications

Ana Kuile, Jamie S. Sanderlin, Jessalyn Ayars, Helen E. Chmura, Melissa Dressen, Jessie Golding, Gavin M. Jones, Rebecca Kirby, Kari Norman, Zachary Steel, Valerie Stein Foster. 2025. Functionalizing ecological integrity: Using functional ecology to monitor animal communities
Austin Z. T. Allison, Helen E. Chmura, Cory T. Williams. 2024. Biologging in a free-ranging mammal reveals apparent energetic trade-offs among physiological and behavioural components of the acute-phase response
Jessie Golding, Helen E. Chmura. 2024. Lessons for conservation from the mistakes of the COVID-19 pandemic: The promise and peril of big data and new communication modalities
Helen E. Chmura, Lucretia E. E. Olson, Remi Murdoch, Alexandra Fraik, Scott Jackson, Kevin S. McKelvey, Rex Koenig, Kristine L. Pilgrim, Nicholas DeCesare, Michael K. Schwartz. 2024. Climate change differentially alters distribution of two marten species in a hybrid zone
Nathan W. Cooper, Bryant C. Dossman, Lucas E. Berrigan, J. Morgan Brown, Alicia R. Brunner, Helen E. Chmura, Dominic A. Cormier, Camille Begin-Marchand, Amanda D. Rodewald, Philip D. Taylor, Christopher M. Tonra, Junior A. Tremblay, Peter P. Marra. 2023. Songbirds initiate migratory flights synchronously relative to civil dusk
Cassandra Duncan, Grace Burrell, Brian M. Barnes, C. Loren Buck, Cory T. Williams, Helen E. Chmura. 2023. Climate change is altering the physiology and phenology of an arctic hibernator
Helen E. Chmura, Cassandra Duncan, Ben Saer, Jeanette T. Moore, Brian M. Barnes, C. Loren Buck, Andrew S. I Loudon, Cory T. Williams. 2022. Effects of spring warming on seasonal neuroendocrinology and activation of the reproductive axis in hibernating Arctic ground squirrels
Helen E. Chmura, Cassandra Duncan, Ben Saer, Jeanette T. Moore, Brian M. Barnes, C. Loren Buck, Helen C. Christian, Andrew S. I Loudon, Cory T. Williams. 2022. Hypothalamic remodeling of thyroid hormone signaling during hibernation in the arctic ground squirrel
Cory T. Williams, Helen E. Chmura, Cole K. Deal, Kathryn Wilsterman. 2022. Sex-differences in phenology: A Tinbergian perspective
Gavin M. Jones, J. Ayars, Sean A. Parks, Helen E. Chmura, Samuel A. Cushman, Jamie S. Sanderlin. 2022. Pyrodiversity in a warming world: Research challenges and opportunities
Helen E. Chmura, Cory T. Williams. 2022. A cross-taxonomic perspective on the integration of temperature cues in vertebrate seasonal neuroendocrine pathways

Citations of Non-Forest Service Publications

Krause, JS, Németh, Z, Pérez, JH, Chmura, HE, Word, KR, Lau^,HJ, Swanson^,RE, Cheah, JC, Quach, LN, Meddle, SL, Wingfield, JC, and M. Ramenofsky. 2021. Annual regulation of adrenocortical function in migrant and resident subspecies of white-crowned sparrow Hormones and Behavior. 127: 104884. DOI: 10.1016/j.yhbeh.2020.104884
Chmura, HE, Zhang, VY, Wilbur, SM, Barnes, BM, Buck, CL, and CT Williams. 2020. Plasticity and repeatability of activity patterns in free-living arctic ground squirrels. Animal Behaviour. 169: 81-91. DOI: 10.1016/j.anbehav.2020.09.007
Chmura, HE, Krause, JS, Pérez, JH, Ramenofsky, M and JC Wingfield. 2020. Departure from breeding grounds is influenced by reproductive timing, molt, and weather in a migratory arctic-breeding passerine (Zonotrichia leucophrys gambelii). Journal of Ornithology. 161: 779-791. DOI: 10.1007/s10336-020-01754-z
Chmura, HE, Wingfield, JC, and TP Hahn. 2020. Non-photic environmental cues and avian reproduction in an era of global change. Journal of Avian Biology. 51(3). DOI: 10.1111/jav.02243
Williams, CT, Chmura, HE, Zhang, V, Dillon, D, Wilsterman, K, Barnes, BM, and CL Buck. 2019. Environmental heterogeneity affects seasonal variation in thyroid hormone physiology of free-living arctic ground squirrels. Canadian Journal of Zoology. 97 (9): 783-790. DOI 10.1139/cjz-2018-0302
Chmura, HE, Kharouba, HM, Ashander, J, Ehlman, SP, Rivest, EB, and LH Yang. 2019. The mechanisms of phenology: the patterns and processes of phenological shifts. Ecological Monographs. 89 (1): e01337. DOI: 10.1002/ecm.1337
Chmura, HE, Krause, JS, Pérez, JH, Sweet, SK, Asmus, AL, Hunt, KE, Meddle, SL, McElreath, R, Boelman, NT, Gough, L and JC Wingfield. 2018. Late‐season snowfall is associated with decreased offspring survival in two migratory arctic‐breeding songbird species. Journal of Avian Biology. 49(9): e01712. DOI: 10.1111/jav.01712
Krause, JS, Pérez, JP, Chmura, HE, Hunt, KE, Meddle, SL, Gough, L, Boelman, NT, Wingfield, JC. 2018. Weathering the storm: Do arctic blizzards cause repeatable changes in stress physiology and body condition in breeding songbirds? General and Comparative Endocrinology. 267: 183-192. DOI: 10.1016/j.ygcen.2018.07.004
Chmura, HE, Glass, TR, and CT Williams. 2018. Biologging physiological and ecological responses to climatic variation: New tools for the climate change era. Frontiers in Ecology and Evolution. DOI: /10.3389/fevo.2018.00092
Asmus, AL, Chmura, HE, Høye, TT, Krause, JS, Pérez, JH, Sweet, SK, Boelman, NT, Wingfield, JC, and L Gough. 2018. Shrub shading moderates the effects of weather on arthropod activity in arctic tundra. Ecological Entomology. 267: 183-192. DOI: 10.1111/een.12644
Oliver, R, Ellis, D, Chmura, HE, Gough, L, Krause, JS, Pérez, JH, Sweet, SK, Wingfield, JC, and NT Boelman. 2018. Eavesdropping on the Arctic: Automated bioacoustics reveal dynamics in songbird breeding phenology. Science Advances. 4: eaaq1084. DOI: 10.1126/sciadv.aaq1084
Pérez, JH, Krause, JS and HE Chmura. 2018. Tundra songbird community composition during recovery from the Anaktuvuk River Fire. International Journal of Wildland Fire. 21: 69-71. DOI: 10.1071/WF17159
Chmura, HE, Meddle, SL, Wingfield, JC, and TP Hahn. 2017. Effects of a social cue on reproductive development and pre-alternate molt in seasonally breeding migrant and resident female songbirds (Zonotrichia leucophrys). Journal of Experimental Biology. 220: 2947-2956. DOI: 10.1242/jeb.160994
Boelman, NT, Wingfield, JC, Gough, L, Krause, JS, Sweet, SK, Chmura, HE and JH Pérez. 2017. Extreme spring conditions in the Arctic delay spring phenology of long distance migratory songbirds. Oecologia. 185 (1): 69-80. DOI: 10.1007/s00442-017-3907-3
Wingfield, JC, Pérez, JH, Krause, JS, Word, KR, González-Gómez, PL, Lisovski, S and HE Chmura. 2017. How birds cope physiologically and behaviourally with extreme climatic events. Philosophical Transactions B. 372 (1723): 20160140. DOI: 10.1098/rstb.2016.0140
Chmura, HE, Wey, TW and DT Blumstein. 2016. Differential sensitivity of foraging and vigilance to internal state and environmental variables in yellow-bellied marmots (Marmota flaviventris). Behavioral Ecology and Sociobiology. 70(11): 1901-1910. DOI: 10.1007/s00265-016-2195-y
Krause, JS, Pérez, JH, Chmura, HE, Sweet, SK, Meddle, SL, Hunt, KE, Gough, L, Boelman, NT and JC Wingfield. 2016.The effect of extreme spring weather on body condition and stress physiology in Lapland longspurs and white-crowned sparrows breeding in the Arctic. General and Comparative Endocrinology. 237: 10-18. DOI: 10.1016/j.ygcen.2016.07.015
Krause, JS, Pérez, JH, Chmura, HE, Meddle, SL, Hunt, KE, Gough, L, Boelman, NT and JC Wingfield. 2016. The stress response is attenuated during inclement weather in parental, but not in pre-parental, Lapland longspurs (Calcarius lapponicus) breeding in the Low Arctic. Hormones and Behavior. 83: 68-74. DOI: 10.1016/j.yhbeh.2016.05.018
Boelman, NT, Holbrook, JD, Greaves, HE, Krause, JS, Chmura, HE, Magney, TS, Pérez, JH, Eitel, JUH, Gough, L, Vierling, KT, Wingfield, JC and LA Vierling. 2016. Airborne laser scanning and spectral remote sensing give a bird's eye perspective on arctic tundra breeding habitat at multiple spatial scales. Remote Sensing of Environment. 184: 337-343. DOI: 10.1016/j.rse.2016.07.012
Pérez, JH, Krause, JS, Chmura, HE, Bowman, S, McGuigan, M, Asmus, AL, Meddle, SL, Hunt, KE, Gough, L, Boelman, NT and JC Wingfield. 2016. Nestling growth rates in relation to food abundance and weather in the Arctic. The Auk. 133(2):261-272. DOI: 10.1642/AUK-15-111.1
Krause, JS, Németh, Z, Pérez, JH, Chmura, HE, Ramenofsky, M and JC Wingfield. 2016. Annual hematocrit profiles in two subspecies of White-crowned sparrows: A migrant and a resident comparison. Physiological and Biochemical Zoology. 89(1):51-60. DOI: 10.1086/684612
Krause, JK, Chmura, HE, Pérez, JH, Quach, L, Asmus, AL, Word, KR, McGuigan, MA, Sweet, SK, Meddle, SL, Gough, L, Boelman, NT and JC Wingfield. 2016. Breeding on the leading edge of a northward range expansion: Differences in morphology and the stress response in the arctic Gambel’s white-crowned sparrow, Oecologia. 180(1): 33-44. DOI: 10.1007/s00442-015-3447-7
Wingfield, JC, Krause, JS, Pérez, JH, Chmura, HE, Nemeth, Z, Word, KR, Calisi, RM and SL Meddle. 2015. A mechanistic and energetic approach to understanding range shifts in a changing world: What makes a pioneer? General and Comparative Endocrinology. 222: 44-53. DOI: 10.1016/j.ygcen.2015.08.022
Boelman, NT, Gough, L, Wingfield, JC, Goetz, S, Asmus, A, Chmura, HE, Krause, JS, Pérez, JH, Sweet, SK and KC Guay. 2014. Greater shrub dominance alters breeding habitat and food resources for migratory songbirds in Alaskan arctic tundra, Global Change Biology. 21(4): 1508-1520. DOI:10.1111/gcb.12761
Hahn, TP, Brazeal, KR, Schultz, EM, Chmura, HE, Watts, HE, Cornelius, J and SA MacDougall-Shackleton. 2014. Annual Schedules. In CG Scanes, ed. Sturkie’s Avian Physiology, Sixth Edition, Elsevier, London, UK. pp 847-848